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output of parser error to console in debug mode #311

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output of parser error to console in debug mode #311

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10 changes: 8 additions & 2 deletions lib/cli.js
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,7 @@ cli.main = function cliMain(opts) {
function processGrammar(raw, lex, opts) {
var grammar,
parser;
grammar = cli.processGrammars(raw, lex, opts.json);
grammar = cli.processGrammars(raw, lex, opts.json, opts.debug);
parser = cli.generateParserString(opts, grammar);
return parser;
}
Expand Down Expand Up @@ -154,7 +154,7 @@ cli.generateParserString = function generateParserString(opts, grammar) {
return generator.generate(settings);
};

cli.processGrammars = function processGrammars(file, lexFile, jsonMode) {
cli.processGrammars = function processGrammars(file, lexFile, jsonMode, debugMode) {
"use strict";
lexFile = lexFile || false;
jsonMode = jsonMode || false;
Expand All @@ -168,13 +168,19 @@ cli.processGrammars = function processGrammars(file, lexFile, jsonMode) {
grammar = ebnfParser.parse(file);
}
} catch (e) {
if (debugMode === true) {
console.log(e);
}
throw new Error('Could not parse jison grammar');
}
try {
if (lexFile) {
grammar.lex = require('lex-parser').parse(lexFile);
}
} catch (e) {
if (debugMode === true) {
console.log(e);
}
throw new Error('Could not parse lex grammar');
}
return grammar;
Expand Down